Main Entry: ¹sub·sid·i·ary

Pronunciation: \səb-ˈsi-dē-ˌer-ē, -ˈsi-də-rē\

Function: adjective

Etymology: Latin subsidiarius, from subsidium reserve troops

Date: 1543

1 a : furnishing aid or support : auxiliary <subsidiary details> b : of secondary importance <a subsidiary stream>
2 : of, relating to, or constituting a subsidy <a subsidiary payment to an ally>

— sub·sid·i·ari·ly \-ˌsi-dē-ˈer-ə-lē\ adverb